.certification {
  position: relative;
  width: 100%;
  padding-top: 100px;
}
.certification__intro {
  position: relative;
  width: 100%;
  overflow: hidden;
}
.certification__intro__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.certification__intro__background img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.certification__intro__menu {
  position: absolute;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  align-content: center;
  flex-wrap: wrap;
  background: #fff;
  background: color(display-p3 1 1 1);
  padding-left: calc((100vw - 1420px) / 2);
  z-index: 2;
}

.certification__intro__menu__item {
  position: relative;
  display: flex;
  color: #afafaf;
  color: color(display-p3 0.6875 0.6875 0.6875);
  min-width: 198px;
  padding: 20px 25px;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  background: #fff;
  font-family: Pretendard;
  font-size: 22px;
  font-style: normal;
  font-weight: 600;
  line-height: 140%;
  cursor: pointer;
  transition: color 0.3s ease;
}

.certification__intro__menu__item::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 100%;
  height: 4px;
  background-color: #0075D0;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease;
}

.certification__intro__menu__item:hover {
  color: #0075D0;
}

.certification__intro__menu__item:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.certification__intro__menu__item.active::after {
  transform: translateX(-50%) scaleX(1);
}

.certification__intro__menu__item.active {
  color: #0075D0;
}
.certification__intro__menu__bar {
  position: relative;
  width: 2px;
  height: 15px;
  background: #d4d4d4;
}
.certification__intro__contents {
  display: flex;
  flex-direction: column;
  padding-top: 190px;
  padding-bottom: 150px;
  gap: 23px;
  position: relative;
  max-width: 1420px;
  margin: 0 auto;
  align-items: flex-end;
}
.certification__intro__contents__title {
  width: 707px;
  color: #fff;
  text-align: right;
  font-family: Raleway, sans-serif;
  font-size: 90px;
  font-style: normal;
  font-weight: 300;
  line-height: 110%;
}
.certification__intro__contents__title span {
  font-weight: 600;
}
.certification__intro__contents__paragraph {
  color: #fff;
  font-family: Pretendard, sans-serif;
  font-size: 32px;
  font-style: normal;
  font-weight: 500;
  line-height: 140%;
  letter-spacing: -0.64px;
  text-align: right;
}
.certification__contents {
  position: relative;
  max-width: 1420px;
  margin: 0 auto;
  padding: 133px 40px;
  box-sizing: border-box;
  text-align: center;
}
.certification__contents__title {
  color: #111;
  font-family: Raleway, sans-serif;
  font-size: 70px;
  font-style: normal;
  font-weight: 600;
  line-height: 140%;
}
.certification__contents__paragraph {
  color: #505050;
  font-family: Pretendard, sans-serif;
  font-size: 24px;
  font-style: normal;
  font-weight: 400;
  line-height: 140%;
  letter-spacing: -0.48px;
  margin-top: 30px;
}
.certification__swiper {
  position: relative;
  background: #d7f0ef;
  padding-top: 130px;
  padding-bottom: 256px;
  overflow: hidden;
}
.certification__swiper__list {
  display: flex;
  position: relative;
  gap: 47px;
  padding: 0 calc((100vw - 1420px) / 2 + 40px);
  box-sizing: border-box;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.certification__swiper__list::-webkit-scrollbar {
  display: none;
}
.certification__swiper__list__item {
  position: relative;
  flex-shrink: 0;
}
.certification__swiper__list__item__image img {
  width: auto;
  height: 290px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}
.certification__swiper__list__item__title {
  position: relative;
  color: #000;
  font-family: Pretendard, sans-serif;
  font-size: 18px;
  font-style: normal;
  font-weight: 400;
  line-height: 140%;
  letter-spacing: -0.36px;
  margin-top: 16px;
}
.certification__swiper__prev {
  cursor: pointer;
  display: flex;
  position: absolute;
  width: 60px;
  height: 60px;
  filter: drop-shadow(0 0 15px rgba(0, 0, 0, 0.25));
  background: #ffffff;
  border-radius: 100%;
  justify-content: center;
  align-items: center;
  top: 250px;
  left: calc((100vw - 1420px) / 2);
  z-index: 2;
  transform: translateX(calc(50% - 20px));
  transition: background 0.4s, left 0.4s, transform 0.4s;
}
.certification__swiper__prev img:nth-of-type(2) {
  display: none;
}
.certification__swiper__prev:hover {
  background: #00a9aa;
}
.certification__swiper__prev:hover img:nth-of-type(1) {
  display: none;
}
.certification__swiper__prev:hover img:nth-of-type(2) {
  display: block;
  transform: scaleX(-1);
}
.certification__swiper__next {
  cursor: pointer;
  display: flex;
  position: absolute;
  width: 60px;
  height: 60px;
  filter: drop-shadow(0 0 15px rgba(0, 0, 0, 0.25));
  background: #ffffff;
  border-radius: 100%;
  justify-content: center;
  align-items: center;
  top: 250px;
  right: calc((100vw - 1420px) / 2);
  z-index: 2;
  transform: translateX(50%);
  transition: background 0.4s, right 0.4s, transform 0.4s;
}
.certification__swiper__next img {
  transform: scaleX(-1);
}
.certification__swiper__next img:nth-of-type(2) {
  display: none;
}
.certification__swiper__next:hover {
  background: #00a9aa;
}
.certification__swiper__next:hover img:nth-of-type(1) {
  display: none;
}
.certification__swiper__next:hover img:nth-of-type(2) {
  display: block;
  transform: scaleX(1);
}

/* --- 📱 반응형 스타일 --- */

@media (max-width: 1440px) {
  .certification__intro__menu {
    padding-left: 40px;
  }
  .certification__intro__contents {
    padding-right: 40px;
    box-sizing: border-box;
  }
  .certification__swiper__list {
    padding: 0 40px;
  }
  .certification__swiper__prev {
    left: 10px;
    top: 250px;
    transform: none;
  }
  .certification__swiper__next {
    right: 10px;
    transform: none;
  }
}

@media (max-width: 1024px) {
  .certification {
    padding-top: 80px;
  }
  .certification__intro__contents {
    padding: 150px 40px 120px;
  }
  .certification__intro__contents__title {
    font-size: 70px;
    width: auto;
  }
  .certification__intro__contents__paragraph {
    font-size: 24px;
  }
  .certification__intro__menu {
    padding-left: 0;
    justify-content: center;
  }

  .certification__contents {
    padding: 100px 40px;
  }
  .certification__contents__title {
    font-size: 50px;
  }
  .certification__contents__paragraph {
    font-size: 20px;
  }

  .certification__swiper {
    padding: 100px 0 150px;
  }
  .certification__swiper__prev,
  .certification__swiper__next {
    top: 50%;
    transform: translateY(-100%);
    margin-top: -10px;
  }
}

@media (max-width: 800px) {
  .certification {
    padding-top: 80px;
  }
  .certification__intro__contents {
    padding: 120px 20px 100px;
    align-items: center;
  }
  .certification__intro__contents__title {
    font-size: 42px;
    text-align: center;
    width: auto;
  }
  .certification__intro__contents__paragraph {
    font-size: 18px;
    text-align: center;
  }
  .certification__intro__menu {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    overflow-x: auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
    -ms-overflow-style: none;
    scrollbar-width: none;
  }
  .certification__intro__menu::-webkit-scrollbar {
    display: none;
  }
  .certification__intro__menu__item {
    min-width: auto;
    font-size: 18px;
    width: auto;
    padding: 15px 20px;
    white-space: nowrap;
  }

  .certification__contents {
    padding: 80px 20px;
  }
  .certification__contents__title {
    font-size: 32px;
  }
  .certification__contents__paragraph {
    font-size: 16px;
    margin-top: 15px;
  }

  .certification__swiper {
    padding: 60px 0 100px;
  }
  .certification__swiper__list {
    padding: 0 20px;
    gap: 20px;
  }
  .certification__swiper__list__item__image img {
    height: auto;
  }

  .certification__swiper__prev,
  .certification__swiper__next {
    display: flex;
    width: 45px;
    height: 45px;
  }
  .certification__swiper__prev {
    left: 5px;
  }
  .certification__swiper__next {
    right: 5px;
  }
}

@media (max-width: 480px) {
  .certification {
    padding-top: 80px;
  }
  .certification__intro__contents {
    padding: 80px 20px 190px;
  }
  .certification__intro__menu {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 10px;
    width: 100%;
    left: 0;
    transform: none;
    padding: 10px;
    box-sizing: border-box;
    justify-items: center;
  }

  .certification__intro__menu__item {
    width: 100%;
    font-size: 16px;
    padding: 12px 10px;
    text-align: center;
    white-space: normal;
  }

  .certification__intro__menu__bar {
    display: none;
  }
}